Pump for removal of lubricants from containers



Nov. 23, 1948. c. ROTTER ETAL 2,454,343

I PUMP FOR REHOVAL OF LUBRICANTS FROM CONTAINERS Filed Sept. 8, 1944 2Sheets-Shoot 1 FIG. I. FlG.2

4 c. ROTTER EIAL PUMP FOR REMOVAL OF LUBRICANTS FROM CONTAINERS FiledSept. 8, 194.4

2 Sheets-Shoot 2 Patented Nov. 23, 1948 PUMP FOR REMOVAL OF LUBRICANTSFROM CONTAINERS Lutwin C. Rotter, Maplewood, Alexander P. Fox,University City, and Carl H.Mueller, Ferguson, Mo., assignors to LincolnEngineering Company, St. Louis. Mo., a corporation of Missouri IApplication September '8, 1944, Serial No. 553,224

forums. I 1(0). 222-82) This invention relates to lubricator pumps, and

with regard to certain more specific features, to 7 portable pumps ofthis type.

Among the several objects of the invention may be noted the provision ofan improved, lightweight lubricator pump adapted for easy successiveattachments to the lids of portable com-' mercial lubricant containers;the provision of a pump of the class described having an improvedoperating handle and linkage whereby during pumping operation nosubstantial forces are ap plied toward separation of the lids from thecontainers; the provision of a pump of theclass described which does notrequire an extra lid in addition to the one supplied with eachcommercial container used; the provision of a pump of this class whichmay easily be attached to the lids of successive new commercialcontainers without removing the lids, thus to preserve the contents ofthe containers against contamination during emptying of them; and theprovision of a pump of the class described which in connection with therespective containers is compact and well balanced so that theassemblies may easily be carried about by the usual container bails.Other objects will be in part obvious and in part pointed outhereinafter.

The invention accordingly comprises the elements and f combinations ofelements, features of construction, and arrangements of parts which willbe exemplified in the structures hereinafter described, and the scope ofthe application of which will be indicated in the following claims.

In the accompanying drawings, in which is illustrated one of variouspossible embodiments of the invention,

Fig. 1' is a side elevation showing a pump attached to one form oflubricant container, parts being broken away and showing a section;

Fig. 2 is an isometric view of the container of Fig. 1 prepared forattachment of the pump;

Fig. 3 is a view similar to Fig. 1 but showing the use of anotherformQof suction tubeon a differently shaped container, the dotted, linesshowing the relationship between the shape of the container of Fig. 1'and that shown solid in Fig. 3;

Fig. 4 is an enlarged longitudinal section of parts of the pump per sebeing taken on line 4-4 of Fig. 5; i v

Fig. 5 is a horizontal section taken on lines 55 of Figs. 1 and 4; andiT b Fig. 6 a right-end elevation of Fig. 5.

Similar reference characters, indicate corresponding parts throughoutthe several views of the drawings.

Such containers are ordinarily made of light gage stock. The top edge isrolled as indicated at 5 for cooperation with .a groove rolled into the;edge of an even lighter gage cover I. A popular gage for such covers isnumber 26 which,- obviously, is not very stiff. This requires especialcare in mounting any pump thereon.

From the grooved edges of the covers extend tongues 9 which uponapplication of the covers to filled containers are bent in under therolled portion 5 to hold, the covers in place. These tongues carryopenings H for the insertion of a screw driver which is fulcrumed on theedge of the lid in order to open the container. Sometimes the containersare shorter and of greater diameter than shown in Fig. 1 (see the solidlines in Fig. 3 and compare the dotted lines in Fig. 3).

Referring now more particularly to Fig. 1, there is "shown at numeral la portable commercial container for lubricant; for 7. example thetwentyfive pound size. A carrying ball is shown" atil.

Referring more particularly to Figs. 4-6, numeral i5 indicates the bodyof our new pump which includes a supporting pad portion ll wherein areopenings IQ for the reception of suitable fastenings which will bediscussed hereafter.

A horizontal bore 2| carries a sliding plunger 23, the front face ofwhich traverses a lower inlet opening 25. The opening 2.5 is threaded toreceive a rigid suction tube 21, such as shown in Figs. 1, 4 and 6. Or,this threaded opening 25 may have threaded into it a nipple 29 formed onthe end of a short length of flexible, oil-resistant tubing 30 made'ofsynthetic rubber, plastic or the like. In the latter case of theflexible inlet, the bottoms of various lengths of containers may bereached. In the former case of the rigid inlet pipe, 'it is cut with asharp bevel 28 so that if desired it may be forced through the-thingagematerial of the head 1, the length being such as finally to place thebevel near the bottoms of the containers for which the pipe is adapted.

The outside rear end of the plunger 23 is pivoted at 3| between the endsof a generally U-shaped. one-piece clevis member 33. In its centralregion the clevis member 33 is pivoted to a handle 35 (see pivot pin31). One end of the pad i1 is formed as a clevis 39 in which is pivotedthe lower end 4! of the handle 35 (see pivot pin 43). It will be notedthat the rear end of the clevis 33 is closed in solid as indicated at45, which when the linkage is in the dotted-line position shown in Fig.4, functions in connection with the handle 35 as a linkage stop, withoutdei will be noted that it has an angled butt 41 which carries theopenings for the pivotpins 31 and 43.

This butt of the handle also serves as alinkin the mechanism foractuatingtheplunger. At tached to the butt is a curved grip member 43.

On the end of the grip member as is a hoot The general shape of the gripis semi-elliptical.

The outlet of the bore 2i is provided with a nipple 53 between which andthe bore 2i is a check valve 55 held in place by a spring 51. A

flexible lubricant line 59 is attached to the nipple l3 and at its endcarries a suitable coupler BI for temporary attachments to lubricantfittings v such as are carried on various classes of machinery, forexample farm machinery. Reciprocation of the plunger 23 by oscillationof the handle 35 abstracts lubricant from the suction tube 21 (or ill-asthe case may be) and forces it out over the line 59. Oscillation of thehandle 35 is limited between the solidand dotted-line positions shown inFig. 4. It will benoted that these limits with respect to the pad I Iare independent of the apparatus to which the pump is attached.

Cooperation of the clevis 33 with the butt controls the dotted-lineposition limit and cooperasertion of either the tube 21 or 30. Thisbrings the pad I! against the lid, whereupon pointed,

self-tapping drive screws such as shown at 63 may be lightly tapped witha hammer to start holes and then screwed in to make the desiredfastenings. When the pad is secured to the lid, the broad flat lowersurface thereof surrounding the suction tube engages the upper surfaceof the lid to provide a seal to prevent entry of contaminating matterinto the container through the hole 60 in the lid.

On the other hand, the hole 60 may be formed simply by pushing down thepump from above, using the bevel 28 as a former for the hole 60, inwhich event, as the hole is formed, the tube 21 is driven down to thedesired position shown in Fig. 1. The screws are then applied as before.To aid in forcing the beveled pipe 21 through the lid I, an anvil I6 iscast on the body I5 over the pipe 21 so that some additional force maybe brought to bear to puncture the lid. This may be done by striking theanvil I6 with a hammer, thus driving down the pipe 21.

Or, if the user prefers to remove the lid before puncturing it, this maybe done by means of a screw driver as a pry in the openings I I. Moreprecise openings may then be made and the attachment made by the use ofbolts with nuts. The lid may then be replaced and the ears 8 turneddown. In this case, and in the one where hole 60 is battered in, nobevel 28 is needed.

'It is preferred that the user use one of the methods requiring noremoval of the lid, because then danger of contamination of thelubricant 61 is almost entirely eliminated.

The degree of fastening effected by the screws, as described, is enough,in view of the particular placement of the pump and the form of itsoperating handle and linkage, That is to say, the handle 35 which bendsover the parts of the pump which are fastened to the lid places theoperator's hand and directs the force of the hand which operates thehandle 35 directly against the area within the periphery of the lid I.Also, when most thrust is applied, this is applied practicallyperpendicular to the lid in a direction which tends to seat it better onthe container I, instead of having any prying or loosening action. Also,when the suction stroke is brought about, the pull on the handle 35 isthrough the area of the lid within its periphery with only a very smallamount of tilting action in the effective parts 01' the stroke. Theresult is that although the lid I is only fastened to the container Iwith the bentin tongues 8, and although the pump is fastened to therelatively light lid by means of the light fastener 83, the lid is notpried from the container by the pumping action, nor is the pump bodypried from the lid. All thrusts are applied as simple tension orcompression. Thus the preferred. light form of fastening of the pump tohead I by means of screws (which does not require removal of the lid 1)may be resorted to without fear that the pump will come off, Nor needconcern be shown for the relatively weak fastening eflected between thelid and the container by the ears 9.

Another feature of the curved handle is that when it is in thesolid-line position shown in Figs. 1, 3 and 4 it permits of freelyturning'up the ball 61 of the container I so it may be carried aboutconveniently. It will also be noted that this is true regardless of theparticular rotary position assumed by the handle 35 with respect to thevertical axis of the container I. Thus the user needs not to makecareful measurements for attachment purposes. is necessary. Suchplacement also automatically brings about, in connection with the curvedhandle, the more or less vertical stroking desired to bring about thedesirable thrusts on the cover 1.

The purpose of the hook Si is to prevent the hand which grips the handleextension 48 from slipping off the rounded portion of the handle in.applying maximum leverage in making a com-' pression stroke, A featureof the rounded handle is that the hand may easily slip around it from aposition near the hooked end or the handlefor powerful strokes, toobtain high pressure at a low volume rate, to a position near thefulcrum 43 for short, quick and less powerful strokes, for relativelylarge volume rate and low pressure, or for priming th pump.

It will be understood that the user may furnish the pipe 21, any pieceof pipe having the proper threads being suitable, and that it may be cutoff by a hacksaw so as to end near the bottom of the container to beused. In the case of the use of a flexible tube 30, this adjustment isnot necessary as suggested by Fig. 3.

It will be understood that after a container has ,low cost. Itsappearance is also good. The contents of the container are preservedfrom contamination. Even in the case where the lid is removed forapplication of the pump, contaminanation is prevented during use. Itshould be remembered in this connection that portable lubricantapparatus of this class is carried into locations where entry of alltypes of foreign mate- Rough centering is all that particularlyadvantageous for obtaining a quick prime of the pump, Details ofthisvalve pointing out its particular advantages are supplied in theco-pending application o1.John R. Graei, Serial No. 550,956, filedAugust 24, 1944, for Check valve. Complying with rule 43, it should benoted that claims drawn to said check valve appear in said application.a

In view of the above, it will be seen that the several objects of theinvention are achieved other advantageous results attained.

As many changes could be made in the above constructions withoutdeparting from the scope of the invention, it is intended that allmatter contained in the above description or shown in the accompanyingdrawings shall be interpreted as illustrative and not in a limitingsense.

We claim:

1. A lubricant pump adapted for attachment to the relatively light lidoi a portable commercial lubricant container, comprising a body portionformed to provide a horizontal pad having a lower surface adapted toengage the upper surface 01' said lid and to be attached thereto, andalso to provide a horizontal cylinder above said pad, a horizontallyreciprocating plunger in said horizontal cylinder of said body portion,a linkage connecting the body portion and said plunger, said linkageincluding a pump handle, said handle being angled over the body portionfor substantially vertical strokin in the plane of reciprocation oi theplunger with operating thrusts being directed within the boundary of thelid, and

a suction inlet extension on the underside of the body portion forextension through an opening in the lid and into the contents of thecontainer.

and

2. In a pump of the class described, a body portion having a flat bottompad for attachment to the lid of a commercial lubricant container, ahorizontal bore in said body portion, an outlet check valve at one endof said bore, a reciprocating plunger in said bore and having one endextending therefrom, said body having an inlet connecting with the boreintermediate its ends and traversed by the end of the plunger whichworks adjacent to said outlet valve, said body including a clevisadjacent the point where the plunger extends rrom the body, anoscillating operating handle pivoted in said clevis and embed over thebody portion, said handle and plunger moving in the same plane, a hookon the free enact the handle, a clevis pivotedto the exposed portion ofthe plunger and to the handle, and having its sides joined behind thehandle at a distance adapted to form a stop in connection with thehandle upon limited withdrawal oi the plunger from the body portion. 0

3. A lubricant pump for attachment to the light lid of a portablecommercial container, said pump comprising a body portion provided withthe body portion and the plunger, a driving portion of the linkage beingformed as a curved han I die over the body portion and oscillatingsubstantially up and down over the same and movable to a limitingposition to clear said anvil for striking to drive said tube through alid, said curved handle allowing for reciprocation of the plunger bythrusts which are directed to intersect the lid within its line ofperipheral attachment to the container.

4. A lubricant pump for attachment to the light lid, oi a portablecommercial container, said pump comprising abody portion provided withopenings for accommodating attaching means to said lid, said bodyportion having a suction inlet on its bottom, a suction tube extendingdownward from" the bodyportion and attached to said inlet. a

reciprocating plunger in the body portion, an opcrating linkageconnected between the body portion and the plunger, a driving portion orthe linkage being formed as a handle extending over the body portion andoscillating substantially up and down over the same and movable tolimiting positions, said handle allowing for reciprocation of theplunger by thrusts which are directed to intersect the lid within itsline of peripheral attachment to the container, said linkage including aU-shaped clevis pivoted at its open end to the plunger and limitingmotion of the handle in one direction by contact with the body, saidclevis at a mid-point being pivoted to the handle and being closed atits spaced opposite end to contact the handle to limit its motion in theother direction independently of the lid.

5. A lubricant pump for attachment to the light lid of a portablecommercial container, said pump comprising a body portion provided withopenings for accommodating attaching means,

saidbody portion having a suction inlet on its 1 bottom and an anvil onits top, a suction tube extending downward from the body portion andattached to said. inlet, a reciprocating plunger in the body portion, anoperating linkage connected between the body portion and the plunger, adriving portion or the linkage being formed-as a handle curved over thebody portion and oscillating substantially up and down over the same andfor attaching means, said body portion having a suction inlet on itsbottom, a suction tube extending downward from the body portion andattached to said inlet. said suction tube being formed on its bottomwith a beveled cutting face, said body portion being provided with ananvil on its upper side above said tube for driving the tube through alid, a reciprocating plunger in the body portion, an operating linkageconnected between the body portion and the plunger, 9. driving portionof said linkage being formed as a curved handle over the body portionand oscillating substantially up and down over'the same and movable toan outer limiting position to-clear said for reciprocation oi theplunger by thrusts which V memes are directed to intersect the lidwithin its line of peripheral attachment to the container.

7. A lubricant pump adapted to be removably attached to a lid of alubricant container and to pump lubricant therefrom without removin thelid of the container, comprising a pump body formed to provide ahorizontal supporting pad having a lower surface adapted to engage theupper surface of said lid and to provide a horizontal cylinder abovesaid pad, a suction tube extending downward from the lower surface ofthe pad adapted to be inserted through an opening formed in said lidinto the lubricant in the container to seat the lower surface of saidpad against the upper surface of said lid, means for removably securingsaid pump body on said lid with said surfaces in engagement to provide aguard against entrance of contaminating matter into the lubricant in.the container, said pump body having a suction inlet providingcommunication from said suction tube to said cylinder, a reciprocatinplunger in said cylinder, handle means on said pump body forreciprocating said plunger, said pump body being provided with ahorizontal outlet for said cylinder, said handle means oscillatand beingarched over the lid in a direction such LUTWIN C. ROTTER. ALEXANDER P;FOX. CARL H. MUELLER.

10 REFERENCES CITED The following references are of record in the fileof this patent: 7

UNITED STATES PATENTS 15 Number Name Date 459,529 White Sept. 15, 18911,616,634 Miller Feb. 8, 1927 1,639,409 Johnson Aug. 16, 1927 1,666,064Ament Apr. 17, 1928 20 2,172,136 Davis Sept. 5, 1939 2,257,725 DavisOct. 7, 1941 2,299,492 ,Pfauser Oct. 20, 1942 FOREIGN PATENTS 0 NumberCountry Date 379,757 Great Britain Sept. 5, 1932 ing in a planeincluding the axis of the plunger that thrusts for oscillating thehandle are directed to intersect the lid within its line of peripheralattachment to the container.

